Decibel Levels and Perceived Volume Change

Here is information about decibel levels and perceived volume change. Here’s the quick read info, with supporting documentation below.

  • 3dB = twice the power
  • 6dB = twice the amplitude
  • ~10dB = twice the perceived volume
  • Adding up two 12dB noise sources will get you, on average, 15dB (which will not sound twice as loud)

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